What Alan said. It's not a layup it's a brand of carbon fiber fabric. The weave is different because the bundles of fibers are flat strips not round, like tape vs a rope. So, the fibers lie straighter and there's less kinking when they're woven into fabric. When composites fail it usually starts at a point where the fibers cross over in a weave. Less crossovers makes for stronger fabric, but doesn't drape as well. Stitched, nonwoven double or triple layer is usually the strongest fabric since there are no crossing threads.